Warning: require(/var/www/html/vendor/symfony/polyfill-mbstring/bootstrap.php): Failed to open stream: No such file or directory in /var/www/html/vendor/composer/autoload_real.php on line 41

Fatal error: Uncaught Error: Failed opening required '/var/www/html/vendor/composer/../symfony/polyfill-mbstring/bootstrap.php' (include_path='.:/usr/local/lib/php') in /var/www/html/vendor/composer/autoload_real.php:41 Stack trace: #0 /var/www/html/vendor/composer/autoload_real.php(45): {closure}() #1 /var/www/html/vendor/autoload.php(22): ComposerAutoloaderInit5c06b0b445482a0c82ed124db1d60587::getLoader() #2 /var/www/html/frontend/web/index.php(5): require('...') #3 {main} thrown in /var/www/html/vendor/composer/autoload_real.php on line 41